US President Donald Trump sits in the drivers seat of a semi-truck as he welcomes truckers and CEOs to the White House in Washington, DC, March 23, 2017, to discuss healthcare. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Donald Trump sits in the drivers seat of a semi-truck as he welcomes truckers and CEOs to the White House in Washington, DC, March 23, 2017, to discuss healthcare. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Donald Trump sits in the drivers seat of a semi-truck as he welcomes truckers and CEOs to the White House in Washington, DC, March 23, 2017, to discuss healthcare. / AFP PHOTO / JIM WATSON / ALTERNATIVE CROP (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Donald Trump (C) waves after closing the door as he sits in the drivers seat of a semi-truck while welcoming truckers and CEOs to the White House in Washington, DC, March 23, 2017, to discuss healthcare. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Donald Trump sits in the drivers seat of a semi-truck as he welcomes truckers and CEOs to the White House in Washington, DC, March 23, 2017, to discuss healthcare. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

U.S. President Donald Trump stands on a truck while he welcomes truckers and CEOs to attend a meeting regarding healthcare at the White House in Washington, U.S., March 23, 2017. REUTERS/Carlos Barria

U.S. President Donald Trump sits on a truck as he welcomes truckers and CEOs to attend a meeting regarding healthcare at the White House in Washington, U.S., March 23, 2017. REUTERS/Carlos Barria